Namespaces

Variants

Views

Actions

Uniform continuity

A property of a function (mapping) , where and are metric spaces. It requires that for any there is a such that for all satisfying , the inequality holds.

If a mapping is continuous on and is a compactum, then is uniformly continuous on . The composite of uniformly-continuous mappings is uniformly continuous.

Uniform continuity of mappings occurs also in the theory of topological groups. For example, a mapping , where , and topological groups, is said to be uniformly continuous if for any neighbourhood of the identity in , there is a neighbourhood of the identity in such that for any satisfying (respectively, ), the inclusion (respectively, ) holds.

The notion of uniform continuity has been generalized to mappings of uniform spaces (cf. Uniform space).